new function() {
	var _self = this;
	_self.width = 2560; //设置默认最大宽度
	_self.fontSize = 1.5; //默认字体大小
	_self.widthProportion = function() {
		var p = (document.body && document.body.clientWidth || document.getElementsByTagName("html")[0]
			.offsetWidth) / _self.width;
		return p > 1 ? 1 : p < 0.32 ? 0.32 : p;
	};
	_self.changePage = function() {
		document.getElementsByTagName("html")[0].setAttribute("style", "font-size:" + _self.widthProportion() *
			_self.fontSize + "px !important");
	}
	_self.changePage();
	window.addEventListener('resize', function() {
		_self.changePage();
	}, false);
};